Reference for Workspaces

Autodesk Navisworks comes with several pre-configured workspaces:

Mode Description
Safe Mode selects the layout with the minimum features
Navisworks Extended selects the layout recommended for advanced users
Navisworks Standard selects the layout with commonly-used windows auto-hidden as tabs
Navisworks Minimal selects the layout giving the most space to the Scene View

You can use these workspaces as-is or modify them in accordance to your requirements. When you first start Autodesk Navisworks, the Navisworks Minimal workspace is used.